New window without creating a new Screen object
I have two monitors but I only have one blender window open. I expand the window to fill both monitors and then alter the screen layouts so that there is a split on the edge of the physical monitors. By setting the window size then saving the startup file, it always opens to this size, and includes my layouts, I also disable Load UI so that I keep my layouts with other files.



You may notice that the two monitors are different resolutions, I have a python console filling the off-monitor part that is not visible.